Group avatar glitch

Uploaded the image, but it doesn't show. Interestingly, under the image there seems to be a writing of the word "avatar" that's partially visible when no image is shown.

<img width="493" alt="image" src="https://github.com/open-boardgame-stats/webapp/assets/265507/ff20ea0c-1c5d-49d5-aa62-cdb9a7f8ba93">

This is most likely a deployment issue, yet the `avatar` text could be hidden...
